| human parainfluenza virus 1 | 34 | species | viruses | viruses | 12730 |
| human parainfluenza virus 3 | 51 | species | viruses | viruses | 11216 |
| human parvovirus b19 | 81 | species | viruses | viruses | 10798 |
| human respiratory syncytial virus | 66 | species | viruses | viruses | 11250 |
| human t-lymphotropic virus 1 | 137 | no rank | viruses | viruses | 11908 |
| human t-lymphotropic virus 2 | 60 | no rank | viruses | viruses | 11909 |
| influenza a virus | 135 | species | viruses | viruses | 11320 |
| influenza b virus | 57 | species | viruses | viruses | 11520 |
| influenza c virus | 48 | species | viruses | viruses | 11552 |
| japanese encephalitis virus | 83 | species | viruses | viruses | 11072 |
| jc polyomavirus | 89 | species | viruses | viruses | 10632 |
| junin mammarenavirus | 31 | species | viruses | viruses | 11619 |
| klebsiella oxytoca | 66 | species | bacteria | bacteria | 571 |
| klebsiella pneumoniae | 146 | species | bacteria | bacteria | 573 |
| kumlinge virus | 2 | no rank | viruses | viruses | 11092 |
| kyasanur forest disease virus | 13 | species | viruses | viruses | 33743 |
| la crosse virus | 40 | no rank | viruses | viruses | 11577 |
| lassa mammarenavirus | 41 | species | viruses | viruses | 11620 |
| lechiguanas virus | 1 | no rank | viruses | viruses | 69245 |
| legionella longbeachae | 16 | species | bacteria | bacteria | 450 |
| legionella pneumophila | 133 | species | bacteria | bacteria | 446 |
| leishmania braziliensis | 52 | species | invertebrates | protozoa | 5660 |
| leishmania chagasi | 46 | species | invertebrates | protozoa | 44271 |
| leishmania colombiensis | 5 | species | invertebrates | protozoa | 93413 |
| leishmania donovani | 98 | species | invertebrates | protozoa | 5661 |
| leishmania garnhami | 4 | species | invertebrates | protozoa | 214612 |
| leishmania guyanensis | 16 | species | invertebrates | protozoa | 5670 |
| leishmania lainsoni | 8 | species | invertebrates | protozoa | 5677 |
| leishmania mexicana venezuelensis | 6 | subspecies | invertebrates | protozoa | 155283 |
| leishmania naiffi | 3 | species | invertebrates | protozoa | 5678 |
| leishmania panamensis | 17 | species | invertebrates | protozoa | 5679 |
| leishmania peruviana | 13 | species | invertebrates | protozoa | 5681 |
| leishmania pifanoi | 17 | species | invertebrates | protozoa | 5682 |
| leishmania shawi | 5 | species | invertebrates | protozoa | 5680 |
| leishmania tropica | 49 | species | invertebrates | protozoa | 5666 |
| leptospira interrogans | 49 | species | bacteria | bacteria | 173 |
| lichtheimia corymbifera | 24 | species | plants | fungi | 42458 |
| listeria ivanovii | 32 | species | bacteria | bacteria | 1638 |
| listeria monocytogenes | 207 | species | bacteria | bacteria | 1639 |
| listeria seeligeri | 25 | species | bacteria | bacteria | 1640 |
| listeria welshimeri | 21 | species | bacteria | bacteria | 1643 |
| louping ill virus | 14 | species | viruses | viruses | 11086 |
| lumpy skin disease virus | 16 | species | viruses | viruses | 59509 |
| lymphocytic choriomeningitis mammarenavirus | 148 | species | viruses | viruses | 11623 |
| macacine herpesvirus 1 | 25 | species | viruses | viruses | 10325 |
| machupo mammarenavirus | 18 | species | viruses | viruses | 11628 |
| maize dwarf mosaic virus | 24 | species | viruses | viruses | 12203 |
| maize rough dwarf virus | 13 | species | viruses | viruses | 10989 |
| maize stripe virus | 18 | species | viruses | viruses | 12330 |
| marburg marburgvirus | 17 | species | viruses | viruses | 11269 |
| measles virus | 119 | species | viruses | viruses | 11234 |
| menangle virus | 12 | species | viruses | viruses | 152219 |
| molluscum contagiosum virus | 36 | species | viruses | viruses | 10279 |
| monkeypox virus | 35 | species | viruses | viruses | 10244 |
| moraxella catarrhalis | 87 | species | bacteria | bacteria | 480 |
| morganella morganii | 46 | species | bacteria | bacteria | 582 |
| mucor circinelloides | 27 | species | plants | fungi | 36080 |
| mumps virus | 61 | species | viruses | viruses | 11161 |
| murray valley encephalitis virus | 28 | species | viruses | viruses | 11079 |
| mycobacterium abscessus | 38 | species | bacteria | bacteria | 36809 |
| mycobacterium avium | 125 | species | bacteria | bacteria | 1764 |
| mycobacterium bovis | 132 | species | bacteria | bacteria | 1765 |
| mycobacterium fortuitum | 60 | species | bacteria | bacteria | 1766 |
| mycobacterium haemophilum | 26 | species | bacteria | bacteria | 29311 |
| mycobacterium kansasii | 49 | species | bacteria | bacteria | 1768 |
| mycobacterium leprae | 95 | species | bacteria | bacteria | 1769 |
| mycobacterium marinum | 51 | species | bacteria | bacteria | 1781 |
| mycobacterium scrofulaceum | 31 | species | bacteria | bacteria | 1783 |
| mycobacterium simiae | 25 | species | bacteria | bacteria | 1784 |
| mycobacterium szulgai | 18 | species | bacteria | bacteria | 1787 |
| mycobacterium ulcerans | 46 | species | bacteria | bacteria | 1809 |
| mycobacterium xenopi | 34 | species | bacteria | bacteria | 1789 |
| mycoplasma capricolum | 43 | species | bacteria | bacteria | 2095 |
| mycoplasma capricolum subsp. capripneumoniae | 11 | subspecies | bacteria | bacteria | 40480 |
| mycoplasma mycoides | 38 | species | bacteria | bacteria | 2102 |
| mycoplasma pneumoniae | 93 | species | bacteria | bacteria | 2104 |
| naegleria fowleri | 33 | species | invertebrates | protozoa | 5763 |
| nectria haematococca | 50 | species | plants | fungi | 140110 |
| neisseria gonorrhoeae | 136 | species | bacteria | bacteria | 485 |
| neisseria meningitidis | 130 | species | bacteria | bacteria | 487 |
| neorickettsia sennetsu | 18 | species | bacteria | bacteria | 951 |
| new york virus | 7 | species | viruses | viruses | 44755 |
| newcastle disease virus | 93 | species | viruses | viruses | 11176 |
| nicotiana tabacum | 304 | species | plants | | 4097 |
| nipah virus | 51 | species | viruses | viruses | 121791 |
| nocardia asteroides | 51 | species | bacteria | bacteria | 1824 |
| nocardia nova | 13 | species | bacteria | bacteria | 37330 |
| northern cereal mosaic virus | 4 | species | viruses | viruses | 100880 |
| norwalk virus | 73 | species | viruses | viruses | 11983 |
| omsk hemorrhagic fever virus | 8 | species | viruses | viruses | 12542 |
| oran virus | -3 | no rank | viruses | viruses | 69247 |
| orientia tsutsugamushi | 40 | species | bacteria | bacteria | 784 |
| oropouche virus | 11 | species | viruses | viruses | 118655 |
| parachlamydia acanthamoebae | 20 | species | bacteria | bacteria | 83552 |
| pasteurella multocida | 65 | species | bacteria | bacteria | 747 |
| peptococcus niger | 8 | species | bacteria | bacteria | 2741 |
| peptostreptococcus anaerobius | 23 | species | bacteria | bacteria | 1261 |
| peronosclerospora philippinensis | 4 | species | plants | | 886948 |
| peste-des-petits-ruminants virus | 32 | species | viruses | viruses | 31604 |
| phakopsora pachyrhizi | 32 | species | plants | fungi | 170000 |